Color

#3d50fa

#3d50fa
hex#3d50fa
rgbrgb(61, 80, 250)
hslhsl(234, 95%, 61%)
oklchoklch(0.535 0.249 270)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1363

Colors that go with #3d50fa

Charcoal, Crimson and Sea Green lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fae73d

#3daefa · #893dfa

#fa3d50 · #50fa3d

Split-complementary

Open in tool →

#fa893d · #aefa3d

#fa3dae · #fae73d · #3dfa89

Contrast

#3d50fa as textRatioAAAA largeAAAFix
Aaon white
5.64:1passpassfail
  • AAA: use #1f35f9 as the text (7.15:1)
Aaon black
3.73:1failpassfail
  • AA: use #5666fb as the text (4.69:1)
  • AAA: use #838ffc as the text (7.3:1)
  • AA: or shift the background to #e6e6e6 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3d50fa as the background.

Brands using this color

Fonts for this mood

#3d50fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3d50fa
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3d50fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3d50fa-9d9cc4-df8a4e-241f2d-e9eef1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md